Have you ever looked up at the sky and been struck speechless by a cloud so strange it seemed like a message from another ...

Shelf cloud: A low, horizontal, sometimes wedge-shaped cloud associated with the leading edge of a thunderstorm. Although these clouds appear ominous, shelf clouds normally do not produce tornadoes.

People relaxing on Furadouro beach, south of the city of Porto, saw a huge cloud rolling in from over the ocean.

Are you the kind of person who stares up at the sky to watch clouds drift by and sees more than just a fluffy white mass? Do you find yourself lost in daydreams while imagining shapes and creatures ...

Okay, that's a weird one. Pet Names. A NASA observation satellite has imaged an oddly-shaped cloud hovering above the Strath-Taieri region in southeastern New Zealand.

Lenticular clouds are lens-shaped, and can resemble flying saucers. Dark clouds are seen over the skyline with its bank towers in Frankfurt, Germany, October 23, 2016. Reuters / Kai Pfaffenbach ...

A blanket of strange pock-marked clouds has been spotted by NASA satellites off the coast of Chile.. A picture of the beautiful cloud formations taken in August last year was featured as NASA ...

A rare roll cloud stunned beachgoers in Portugal as it swept across the sky during a heatwave. Watch the breathtaking moment.

Video shows the phenomenon floating over the city of Bowie as storms and flooding hit areas across the Northeast US.

A rare "roll cloud" phenomenon resembling a tsunami startled beachgoers in Portugal, triggering strong winds. What is this strange weather event?

The portal-shaped cloud above Karen Mckeown's home (Image: Karen Mckeown / SWNS) Skywatching enthusiast Karen Mckeown, 46, was astonished to discover a portal-shaped cloud looming over her home in ...